37819-84-4Relevant academic research and scientific papers
Solvent-free amide synthesis method and its use in synthesis of polymer antioxidant stabilizer
-
Paragraph 0101-0110, (2017/08/31)
The invention discloses a solvent-free amide synthesis method and its use in synthesis of a polymer antioxidant stabilizer. Through eight reaction expressions, different structural amide-linked thioether high-temperature long-term antioxidant stabilizers, sterically hindered phenol thioether hybrid antioxidants and sterically hindered phenol amide-type antioxidants as desired products are synthesized. Compared with the most carboxylate-bonded antioxidants on the market, the different types of multi-functional hybrid structure antioxidants stably bonding to amide have the advantages of structure stability, acid resistance, base resistance, hydrolysis resistance, environmental degeneration resistance and good synergistic antioxidation activity and are novel antioxidant stabilizer products having performances satisfying novel material development requirements. The novel polymer antioxidant stabilizers solve the problem that the same type of the ester-linked antioxidant stabilizer on the market has an ester bond easily decomposed under acid and base conditions and can be easily hydrolyzed and the existing product DSTDP/DLTDP on the market produces a smell in use and processing and the degraded material releases VOCs. The novel polymer antioxidant stabilizers provide a strong support and more choices for development of novel polymers.
Carboxamide and amine compounds as well as preparation method and applications thereof
-
Paragraph 0076; 0077; 0078; 0079; 0080, (2016/10/08)
The invention discloses carboxamide and amine compounds as well as a preparation method and applications thereof as stable and efficient antioxidation sterilizers, belonging to the technical field of invention and preparation of novel antioxidation sterilizer compounds. All the compounds disclosed by the invention are stable antioxidation sterilizers which have different stable structures formed by connecting carboxamide and amine bonds, and meanwhile, products having different lengths of aliphatic chains are produced by adjusting an n value, such that the products can be completely matched with a specific high polymer material in performance, the problems that a micromolecular stabilizer is volatilized fast, easily drawn from high polymer materials and the like are solved, the service life of the material is greatly prolonged, and the carboxamide and amine compounds have relatively strong and durable high polymer material protection performance. Compared with the prior art, the stable high polymer antioxidants disclosed by the invention have relatively high capabilities of resisting hydrolysis, acidolysis, alkaline hydrolysis, degradation in a chemical pollution environment, and these performances provides a new better antioxidant selection range for the development of modern new materials. Furthermore, this kind of carboxamide and amine compounds also have the characteristics of difficulty in volatilization, good matching performance with high polymer materials, good high polymer protection capability, good environmental performance, attractive appearance and durability, low cost and the like.
Use of cyclic organic amines in dermatological compositions
-
, (2008/06/13)
The use of cyclic organic amines, as free radicals deactivators, in the preparation of cosmetic and dermatological compositions.
